From 13946ba27b21d7220fba746b3335f35c3e7eb4aa Mon Sep 17 00:00:00 2001
From: Gurchetan Singh <gurchetansingh@google.com>
Date: Wed, 13 Sep 2023 13:50:50 -0700
Subject: [PATCH] gfxstream/guest: add GetRingParamsFromCapset function

Every capset provides ASG ring metadata.  Have a function for
that.

Reviewed-by: Aaron Ruby <aruby@blackberry.com>
Acked-by: Yonggang Luo <luoyonggang@gmail.com>
Acked-by: Adam Jackson <ajax@redhat.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/27246>
---
 .../VirtioGpuAddressSpaceStream.cpp           | 31 +++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/src/gfxstream/guest/GoldfishAddressSpace/VirtioGpuAddressSpaceStream.cpp b/src/gfxstream/guest/GoldfishAddressSpace/VirtioGpuAddressSpaceStream.cpp
index 12d8446e15b..f32fb045636 100644
--- a/src/gfxstream/guest/GoldfishAddressSpace/VirtioGpuAddressSpaceStream.cpp
+++ b/src/gfxstream/guest/GoldfishAddressSpace/VirtioGpuAddressSpaceStream.cpp
@@ -16,6 +16,37 @@
 
 #include "util.h"
 
+static bool GetRingParamsFromCapset(enum VirtGpuCapset capset, const VirtGpuCaps& caps,
+                                    uint32_t& ringSize, uint32_t& bufferSize,
+                                    uint32_t& blobAlignment) {
+    switch (capset) {
+        case kCapsetGfxStreamVulkan:
+            ringSize = caps.vulkanCapset.ringSize;
+            bufferSize = caps.vulkanCapset.bufferSize;
+            blobAlignment = caps.vulkanCapset.blobAlignment;
+            break;
+        case kCapsetGfxStreamMagma:
+            ringSize = caps.magmaCapset.ringSize;
+            bufferSize = caps.magmaCapset.bufferSize;
+            blobAlignment = caps.magmaCapset.blobAlignment;
+            break;
+        case kCapsetGfxStreamGles:
+            ringSize = caps.glesCapset.ringSize;
+            bufferSize = caps.glesCapset.bufferSize;
+            blobAlignment = caps.glesCapset.blobAlignment;
+            break;
+        case kCapsetGfxStreamComposer:
+            ringSize = caps.composerCapset.ringSize;
+            bufferSize = caps.composerCapset.bufferSize;
+            blobAlignment = caps.composerCapset.blobAlignment;
+            break;
+        default:
+            return false;
+    }
+
+    return true;
+}
+
 address_space_handle_t virtgpu_address_space_open() {
     return (address_space_handle_t)(-EINVAL);
 }